solate bat-SL-CoVZXC21 2018 MK211377 Bat CoV YN2018C 2018 Coronavirus BtRs-BetaCoV/YN2018C 2018 MK211378 Bat CoV YN2018D 2018 Coronavirus BtRs-BetaCoV/YN2018Da 2018 MN975262 HKU-SZ-005b Human 20